Designing a mannequin for aerodynamic bike testing

Baan, H.J.M. (2013) Designing a mannequin for aerodynamic bike testing.

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Abstract:To determine the aerodynamic drag of a cyclist tests can be carried out on the renewed bike rig in the Yacht Resarch Unit in Auckland. With these tests the difference in drag for several cyclist positions can be determined and the position of the cyclist can be optimized. Since these tests take a lot of time which is of course inconvenient for the cyclist, especially since he or she has to sit still in the same position during each run. To solve this problem a mannequin is manufactured that can make the same movements as a real person. Furthermore are can the joints of the mannequin be locked individually, so it can be setup in a certain fixed position. The joints are made using a 3D printer, which is available at the Yacht Research Unit. Hereby broken joints can easily be replaced. The mannequin is made of a display mannequin, but also an investigation is carried out concerning the making of a mannequin using CNC technics, to be able to create a custom mannequin, eventually after a specific person. Tests show that the mannequin is usable for dynamic tests, however, to reduce weight and for better shape properties a CNC manufactured mannequin is more desirable. Besides designing and manufacturing the mannequin also some changes are made to the bike rig concerning the stability and versatility.
Item Type:Internship Report (Master)
Clients:
University of Auckland, New Zealand
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Keywords:Mannequin, wind tunnel testing, bike testing
Link to this item:http://purl.utwente.nl/essays/69291
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